Nissan Pathfinder (2011 year). Manual — part 231

DLN-386

< REMOVAL AND INSTALLATION >

[FRONT FINAL DRIVE: M205]

SIDE OIL SEAL

REMOVAL AND INSTALLATION

SIDE OIL SEAL

Removal and Installation

INFOID:0000000006245195

REMOVAL

1. Remove the front final drive assembly. Refer to

DLN-390, "Removal and Installation"

.

2. Remove the differential side shaft and differential side flange

using suitable tool.

3. Place a small hole in the side oil seal case using suitable tool.

4. Remove the side oil seal using Tool as shown.

INSTALLATION

1. Apply multi-purpose grease to the lips of the new side oil seal. Then drive the new side oil seal in evenly to

the gear carrier using suitable tool.

CAUTION:

• Do not reuse side oil seal.

• Do not incline the new side oil seal when installing.

• Apply multi-purpose grease to the lips of the new side oil seal.

2. Installation of the remaining components is in the reverse order of removal.

CAUTION:

Check the differential gear oil level after installation. Refer to

DLN-385

.

BDIA0006E

LDIA0129E

Tool number

: SP8P

LDIA0130E

2011 Pathfinder

FRONT OIL SEAL

DLN-387

< REMOVAL AND INSTALLATION >

[FRONT FINAL DRIVE: M205]

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FRONT OIL SEAL

Removal and Installation

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REMOVAL

1. Remove the drive shafts from the front final drive assembly. Refer to

FAX-7, "VQ40DE : Removal and

Installation"

.

2. Remove the front propeller shaft from the front final drive assembly. Refer to

DLN-318, "Removal and

Installation"

.

3. Measure the total preload torque. Refer to

DLN-393, "Disassembly and Assembly"

.

NOTE:

Record the total preload torque measurement.

4. Remove the drive pinion lock nut using suitable tool.
5. Put matching marks on the companion flange and drive pinion

using paint.

CAUTION:

Use paint to make the matching marks. Do not damage the

companion flange or drive pinion.

6. Remove companion flange using suitable tool.

7. Place a small hole in the front oil seal case using suitable tool.

BDIA0001E

LDIA0171E

LDIA0129E

2011 Pathfinder

DLN-388

< REMOVAL AND INSTALLATION >

[FRONT FINAL DRIVE: M205]

FRONT OIL SEAL

8. Remove the front oil seal using Tool as shown.

INSTALLATION

1. Apply multi-purpose grease to the lips of the new front oil seal.

Then drive the new front oil seal in evenly to the gear carrier

using Tool.

CAUTION:

• Do not reuse front oil seal.

• Do not incline the new front oil seal when installing.

• Apply multi-purpose grease to the lips of the new front oil

seal.

2. Install the companion flange to the drive pinion while aligning the matching marks.
3. Apply anti-corrosive oil to the threads of the drive pinion and the

seating surface of the new drive pinion lock nut. Then adjust the

drive pinion lock nut tightening torque using suitable tool A, and

check the total preload torque using Tool B.

• The total preload torque should be within the total preload

torque specification. When not replacing the collapsible

spacer, it should also be equal to the measurement taken dur-

ing removal plus an additional 0.56 N·m (0.06 Kg-m, 5 in-lb).

• If the total preload torque is low, tighten the drive pinion lock

nut in 6.8 N·m (0.69 Kg-m, 5ft-lb) increments until the total pre-

load torque is met.

CAUTION:

• Do not reuse drive pinion lock nut.

• Apply anti-corrosive oil to the threads of the drive pinion

and the seating surface of the new drive pinion lock nut.

• Adjust the drive pinion lock nut tightening torque to the

lower limit first. Do not exceed the drive pinion lock nut

specified torque. Refer to

DLN-393, "Disassembly and

Assembly"

.

• Do not loosen drive pinion lock nut to adjust the total preload torque. If the drive pinion lock nut

torque or the total preload torque exceeds the specifications, replace the collapsible spacer and

tighten it again to adjust. Refer to

DLN-393, "Disassembly and Assembly"

.

• After adjustment, rotate drive pinion back and forth 2 to 3 times to check for unusual noise, rota-

tion malfunction, and other malfunctions.

4. Installation of the remaining components is in the reverse order of removal.

CAUTION:

Check the differential gear oil level after installation. Refer to

DLN-385

.

Tool number

: SP8P

LDIA0130E

Tool number

: KV38100500 (J-25273)

BDIA0003E

Tool number

B: ST3127S000 (J-25765-A)

Total preload torque: Refer to

DLN-393, "Disassem-

bly and Assembly"

.

WDIA0381E

2011 Pathfinder

CARRIER COVER

DLN-389

< REMOVAL AND INSTALLATION >

[FRONT FINAL DRIVE: M205]

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CARRIER COVER

Removal and Installation

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REMOVAL

1. Drain differential gear oil. Refer to

DLN-385, "Changing Differential Gear Oil"

.

2. Remove the front final drive assembly. Refer to

DLN-390, "Removal and Installation"

.

3. Remove the carrier cover bolts and separate the carrier cover

from the gear carrier using Tool.

CAUTION:

• Do not damage the mating surface.

• Do not insert flat-bladed screwdriver, this will damage the

mating surface.

INSTALLATION

1. Apply 3 mm (0.12 in) bead of sealant to the mating surface of

the carrier cover as shown.

• Use Genuine Silicone RTV or equivalent. Refer to

GI-14,

"Recommended Chemical Products and Sealants"

.

CAUTION:

Remove any old sealant adhering to the mating surfaces.

Also remove any moisture, oil, or foreign material adhering

to the application and mating surfaces.

2. Install the carrier cover to the gear carrier. Tighten the bolts to

the specified torque. Refer to

DLN-393, "Disassembly and

Assembly"

.

3. Install the front final drive assembly. Refer to

DLN-390,

"Removal and Installation"

.

CAUTION:

Fill the front final drive assembly with recommended differential gear oil. Refer to

DLN-385

.

Tool number

: KV10111100 (J-37228)

PDIA0699E

SDIA3204E

2011 Pathfinder

DLN-390

< UNIT REMOVAL AND INSTALLATION >

[FRONT FINAL DRIVE: M205]

FRONT FINAL DRIVE

UNIT REMOVAL AND INSTALLATION

FRONT FINAL DRIVE

Removal and Installation

INFOID:0000000006245198

REMOVAL

1. Remove the drive shafts from the front final drive assembly. Refer to

FAX-7, "VQ40DE : Removal and

Installation"

.

2. Remove the front cross member.
3. Remove the front propeller shaft from the front final drive assembly. Refer to

DLN-318, "Removal and

Installation"

.

4. Disconnect the vent hose from the front final drive assembly.
5. Support the front final drive assembly using a suitable jack.

1.

Front final drive assembly

2.

Front crossmember

Front

AWDIA0019GB

2011 Pathfinder

FRONT FINAL DRIVE

DLN-391

< UNIT REMOVAL AND INSTALLATION >

[FRONT FINAL DRIVE: M205]

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6. Remove the front final drive assembly bolts, then remove the

front final drive assembly.

WARNING:

Support the front final drive assembly while removing using

a suitable jack.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Make sure there are no pinched or restricted areas on the breather hose caused by folding or bend-

ing when installing it.

• Fill the front final drive assembly with differential gear oil after installation. Refer to

DLN-385

.

BDIA0008E

2011 Pathfinder

DLN-392

< UNIT DISASSEMBLY AND ASSEMBLY >

[FRONT FINAL DRIVE: M205]

FRONT FINAL DRIVE

UNIT DISASSEMBLY AND ASSEMBLY

FRONT FINAL DRIVE

Exploded View

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1.

Side bearing adjuster

2.

Side bearing

3.

Side gear thrust washer

4.

Side gear

5.

Lock pin

6.

Pinion mate thrust washer

7.

Pinion mate gear

8.

Pinion mate shaft

9.

Drive pinion

10. Drive pinion height adjusting

washer

11. Drive pinion rear bearing

12. Collapsible spacer

13. Breather tube

14. Differential side flange

15. Dust shield

16. Circular clip

17. Side oil seal

18. Drive pinion front bearing

19. Front oil seal

20. Companion flange

21. Drive pinion lock nut

22. Drain plug

23. Differential side shaft

24. Differential side shaft bearing

25. Extension tube

26. O-ring

27. Gear carrier

28. Plate

29. Differential case

30. Drive gear

AWDIA0020GB

2011 Pathfinder

FRONT FINAL DRIVE

DLN-393

< UNIT DISASSEMBLY AND ASSEMBLY >

[FRONT FINAL DRIVE: M205]

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Disassembly and Assembly

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ASSEMBLY INSPECTION AND ADJUSTMENT

• Drain the differential gear oil before inspection and adjustment. Refer to

DLN-385

.

• Remove and install the carrier cover as necessary for inspection and adjustment. Refer to

DLN-389

.

Total Preload Torque

1. Install the differential side shaft and differential side flange if necessary.

CAUTION:

The differential side shaft and differential side flange must be installed in order to measure total

preload torque.

2. Rotate the drive pinion back and forth 2 to 3 times to check for unusual noise and rotation malfunction.
3. Rotate the drive pinion at least 20 times to check for smooth operation of the bearings.
4. Measure total preload torque using Tool.

NOTE:

Total preload torque = Drive pinion bearing preload torque +

Side bearing preload torque

• If the measured value is out of the specification, check and adjust each part. Adjust the drive pinion

bearing preload torque first, then adjust the side bearing preload torque.

Drive Gear Runout

1. Fit a dial indicator to the drive gear back face.
2. Rotate the drive gear to measure runout.

• If the runout is outside of the limit, check the condition of the drive

gear assembly. Foreign material may be caught between the drive

gear and differential case, or the differential case or drive gear may

be deformed.

CAUTION:

Replace drive gear and drive pinion as a set.

Tooth Contact

31. Side bearing cap

32. Filler plug

33. Carrier cover

34. Bushing

35. Bearing

36

Screw

37

Dowel pin

Tool number

: ST3127S000 (J-25765-A)

Total preload torque: Refer to

DLN-409, "Inspection

and Adjustment"

PDIA0697E

If the total preload torque is greater than specification

On drive pinion bearings: Replace the collapsible spacer.
On side bearings:

Loosen the side bearing adjuster by the same amount on each
side.

If the total preload torque is less than specification

On drive pinion bearings: Tighten the drive pinion lock nut.
On side bearings:

Tighten the side bearing adjuster by the same amount on each
side.

Runout limit:

Refer to

DLN-409, "Inspection and

Adjustment"

SPD886

2011 Pathfinder